Fairphone 5 UNBRICK w/ Bootloader locked - Android 14(+?) Bootloader Only

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21

The latest Android 14 available, FP5.UT2K.B.098

1 Like
22

Hello,
Due to an error on my part, my Fairphone 5 is locked in FastBoot Mode.

The DEVICE STATE is locked

Iā€™m trying to unlock the bootloader:

fastboot.exe flashing unlock
FAILED (remote: 'Flashing Unlock is not allowed
')
fastboot: error: Command failed

fastboot.exe flashing unlock_critical
FAILED (remote: ' Device already : unlocked!')
fastboot: error: Command failed

My Bootloader version : FP5.UT2K.B.098.20250109
I canā€™t reinstall my OS. I had iodeOS.

Just to clarify:

fastboot.exe oem device-info
(bootloader) Verity mode: true
(bootloader) Device unlocked: false
(bootloader) Device critical unlocked: true
(bootloader) Charger screen enabled: true
OKAY [ 0.018s]
Finished. Total time: 0.020s

Can you please help me?
Thank you for your help.

23

Did you try fastboot oem allow-flashing?

24 
 fastboot oem allow-flashing
FAILED (remote: 'unknown command')
fastboot: error: Command failed
25

Is it possible to boot the phone on a bootloader other than your own, i.e. boot on a boot.img of the PC?

26

Is custom avb keys supported on the fairphone 5?

27

I am having a similar issue but I canā€™t run the fastboot flashing unlock command. Does anyone have any recommendations on what to do? Is my phone bricked?

fastboot oem device-info
(bootloader) Verity mode: true
(bootloader) Device unlocked: false
(bootloader) Device critical unlocked: false
(bootloader) Charger screen enabled: true
OKAY [  0.000s]

This is what happens when I try the fasboot oem allow-flashing

fastboot oem allow-flashing
FAILED (remote: 'unknown command')
fastboot: error: Command failed

When I try fastboot flashing unlock I get

fastboot flashing unlock
FAILED (remote: 'Flashing Unlock is not allowed
')
fastboot: error: Command failed

So the later command seems to be a recognized command, it just isnā€™t working. Iā€™m assuming this method isnā€™t working because the ā€œDevice critical unlocked: falseā€

28

What are you trying to accomplish? Is your FP5 working and booting or not? What System do you have installed in which version?

29

I am trying to get the phone to boot into an os, instead of being stuck in fastbootā€¦ I had successfully installed calyxos (version 6.8.21), but locked the bootloader because I didnā€™t think it was necessary to leave unlocked anymore. The FP5 is booting, but it just immediately launches into fastboot

30

Ok so it might be it doesnt work with Calyx or the command removed in general

If its not working,you can contact FP and send it in to Cordon and have them reinstall FPOS. That should cost approx 50ā‚¬.

1 Like
31

Based on that thread I think you are correct. I appreciate you taking the time to reply.

32

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